Glass finish for jars or bottles.



C. HAMMER.

GLASS FINISH FOR JARS 0R BOTTLES.

APPLICATION FILED MAYIG. 1914.

1,1 ,598. Patented Nov; 16, 1915.

Wdwwoao: v 5] vwa ntoz 11 114: M Charles Hammer- W @513 a/l liozmev-i crrARLEs HAMMER, on NEW YORK, N. Y., AssreNo TO AMERICAN METAL CAP COMPANY, OF B OOKLYN, NEW YORK, A CORPORATION or NEW YORK.

GLASS FINISH FOR Zl'ARS R BOTTLES.

Specification of Letters Patent.

Patented Nov. 16, 1915.

Original application filed July 19, 1912, Serial No. 710,442. Divided and this application filed May 16, 1914. Serial No. 839,127.

. cation.

This application is a division of my application erial No. 710,442 filed July 19, 1912, on the bottle cap or closure.

- The above application is directed to the cap and to the combination of the cap with "the-jar or bottle, while the present application is directed to the jar or bottle.

This invention relates to a bottle cap or closure.

The objects of .the invention are so to shape the bottle neck and the cap or closure as, first to ermit the cap to be made of very thin s set metal; second, to cause a cooperation between the notches of the cap and the upper and lower surfaces of the threads of the bottle, whereby the threads will prevent distortion .of the notches of the cap; third, to arrange the notches and threads in such manner as to guide the cap accurately into place and prevent it from wabbling or crossing the threads while it is being screwed home fourth, to provide for locking the cap tightly upon the threads after the cap has been screwed into closed position; and, 'fifth, to minimize the friction of the flange of the cap on the outer edges of thethreads in screwing the -;cap into closed position. With the foregoing and other objects in view, as will appear in the following description, my invention resides in the comb1nat1on and arrangement of parts and m "the details of the construction hereinafter set forth, and particularly defined the appended claims. -B1itfI wish to have it ment of my invention, and I reserve the right to make changes in the shape, size and relative location of the parts that come within the scope and spirit of my invention and are included within the generalmean- 'ing of the terms in which the claims are expressed. In other words, the differences in the wording. of the claims are intended to cover differences in construction; and I desire the privilege of altering the details of my invention accordingly when such alteration is necessary.

In the accompanying drawing, forming part of this speclfication, Figure l is a vertical sectional viewthrough a portion of the upper end of the bottle neck and the outer edge of the cap,'the section being taken at a point through the center of one of the notches in the'lower edge of the bottle cap, as indicated by the line A-B in Fig. 3; Fig. 2 is a. section similar toFig. 1 taken through the cap at a point away from one of the notches; Fig.3 is a side elevation of a bottle cap constructed in accordance with the present invention; Fig. 4 is a bottom plan view of the cap shown in 3 on a reduced scale; Fig. 5 is a side elevation of a bottle neck showing the separated threads having flat bottoms and rounded tops to cooperate with the notches of the cap; Fig. 6 is a plan view of the bottle neck shown in Fig. 5; Fig. 7 is a vertical section through one edge of the cap taken on a line indicated by-C-D in Fig. 3, and showing the annularly and outwardly bulged portion of the flange with the outwardly extending corrugations in said bulged portion; Fig. 8 is a horizontal section taken on a line 1ndi-' Like reference numerals indicate corre-- sponding parts'in the different figures of the drawings.-

cates' the bottle neck; 2 an annular shoulder on said neck; and 3?-3-3 are separated spiral threads extending preferably downward to the shoulder 2. The threads extend a considerable distance around the neck, so that each. will-overlap one-or more of the other threads. The upper end of each thread '3 is preferably beveled in, a

The reference numeral 1 in Fig. 5 indihorizontal plane, as indicated at 4 in Fig.

and is also beveled outwardly in a vertical plane, as indicated at 5 in Fig. 6.

The bottom, or working face of each of g to guide the cap during its turning move- V v the separated threads?) is formed flat and is substantiallynormal to the adjacent outside surface of the bottle or jar, as shown at 6' in Figs. 1, 2 and 5, and the top or upper surface .of each of said threads is,v curved upwardly and inwardly, as indicated at 7 in said figures, making each thread substantially quadrant-shaped in cross-section. As will hereinafter appear, by form rately into position, but also look it in closed position, and at the same time, provide for an effective bracing or reinforcing of the notches, whereby topermit the cap to. be made of thin metalflat top and a depending annular flange. As shown best in Figs. 2 and 7, the annular flange of thecap 10 is formed with an upper portion 11. and a lower portion 12, which are in the same vertical plane and said flange is also formed with an intermediate portion 13 which is rolled or bulged outwardly. This bulged portion 13 in turn, is formed with outwardly extending vertically arranged corrugations 14. p

Formed in the lower edge of the-flange of the bottle cap is a plurality of upwardly and inwardly arched notches 16, the num-' ber of notches 16 being equal to the num-' ber of separated threads 3. As indicated in Figsul and 9, the notches 16'are extended upward from the lower edge of the cap, far enough to cause the lower ends of the ad jacent corrugations 14 to be extended or merged into the highest portion or the crown of the'arch. By. means of this construction, it isfound in practice that the corrugations lend-strength to, the notches. It, will also be seen that the highest portion or..crown of the arch extends inward in practically a horizontal plane, as shown at 17, in Figs. 1 and 9. This horizontal portion 17 lies parallel with and fiat against the flat bottom 6 ofthe adjacent thread 3.

The downwardly and outwar'dly curved lower edge portion 18'ofeach notch 16, as shown in Fig. 9, bears against and rides along the curved top or' surface of the lower thread 3,

The horizontal portion 17 of the notch, as shown in Fig. 1, is extended inward far enough to engage the outer wall 20 of the bottle neck at a threads. i

From the foregoing, it willbe apparent that by striking the arched notches upward in the manner indicated, said notches serve ment on the bottle, by reason of the fact that the horizontal portion 17 at the top of I each notch fits against the fiat bottom of The cap 10 is formed preferablyiwitha point between the separated one thread 3; that the downwardly and oiltwardly curved lower edge 18 of said notch engages and rides upon the curved upper surface of the next lower thread, and that the inner edge 10f the horizontal portion 17 engages the outer faceQO of the bottle neck, and these three parts thusprevent respectively any upward, downward or inward movement of the cap on the bottle neck,

and hold it at all times in proper position on said bottle neck. It will also be observed that the outwardly bulged portion 13 having the corrugations 14 therein, is spaced away from the outer portions of the threads 6, as best indicated in Fig. 2, with the result that the friction between the flange of the cap and thethreads 'is minimized.

By so shaping the notchesof the cap and the threads of the bottle that they cooperate with each other, as above described, a further important advantage is secured, in that after the bottle cap has been screwed down to..,a point where the'flat top of the cap binds on or contacts with the top edge of the bottle neck, acontinued turning movement of the cap causes the portion 17 of the notches 16 to give or. distort slightly downward and this downward distortion causes the downwardly and outwardly curved edges 18 of the notches 16 ,to bite or bind tightly downward on the curved upper surface 7 of thenext lower thread, and'thu's lock the'cap on the bottle, at the same time bracing the notches against any further distortion than is necessary to lock the cap, as above described' This biting or binding of the edge 18 on the curved upper surface '7.

of the lower thread effectually prevents the cap from working loose from the bottle or 1 ar in transportation and the cotiperation between the fiat bottom and curved top threads of the bottle and the peculiarly formed notches of the cap, permits the cap to be manufactured at small expense from very thin metal, and to be easily and quickly fitted onto the bottle and screwed into closed position. I

What is claimed is: Y 1. A storage vessel having a mouth and a A plurality of distinct, separated, overlapping threads on its surface adjacent said mouth,-

plurality of distinct, separated, overlapping threads on its surface adjacent said mouth, each thread having a rear or working'face substantially perpendicular to the adjacent surface of the vessel, and likewise having a rounded portion forward of said working face, the working face of each thread being 5 designed to engage a closure for the vessel to hold the closure in place, and the rounded portion of each thread being also designed to engage the closure in order to cooperate with the Working face of an adjacent thread,

10 said threads being tapered at theinforward name to this specification in the presence of two subscribing Witnesses, this 9th day of15 May, 1914.

- CHARLES HAMMER. Witnesses:

RoB'r. RAKESTRAW, WILLIAM H. ZOURNE. 

